63545081 has 8 divisors (see below), whose sum is σ = 65180160. Its totient is φ = 61921888.

The previous prime is 63545047. The next prime is 63545089. The reversal of 63545081 is 18054536.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 63545081 - 2⁶ = 63545017 is a prime.

It is a super-2 number, since 2×63545081² = 8075954638593122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (63545089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8405 + ... + 14061.

It is an arithmetic number, because the mean of its divisors is an integer number (8147520).

Almost surely, 2^63545081 is an apocalyptic number.

It is an amenable number.

63545081 is a deficient number, since it is larger than the sum of its proper divisors (1635079).

63545081 is a wasteful number, since it uses less digits than its factorization.

63545081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5943.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 63545081 is about 7971.5168569100. The cubic root of 63545081 is about 399.0499976082.

The spelling of 63545081 in words is "sixty-three million, five hundred forty-five thousand, eighty-one".